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Power Systems

Power Systems
A loss less transmission line has a length of 600 km, find the phase shift of voltage signal?

 36°
 90°
 42°
 45°

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Power Systems
For harnessing low variable water heads, the suitable hydraulic turbine with high percentage of reaction and runner adjust vanes is

  Kaplan.
  Impeller.
  Pelton.
  Francis.

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Power Systems
Reflector nuclear reactor are made of

 cast iron.
  beryllium.
 boron.
 steel.

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Power Systems
The function of moderator in a nuclear reactor is to

 reduce temperature.
  stop chain reaction.
  reduce the speed of neutrons.
 absorb neutrons.

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Power Systems
Operating cost of thermal power station is

 less than that of nuclear power plant.
 less than that of hydroelectric power plant.
 is the same as that of nuclear power plant.
  less than that of diesel power plant.

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Power Systems
In a power system with negligible resistance, the fault current at a point is 8.00 pu. The series reactance is to be included at the fault point to limit the short circuit. current to 5.00 pu is

 0.200 pu.
 0.075 pu.
  3.000 pu.
 0.125 pu.

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